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壳聚糖/AM/DM接枝共聚物对纸张的增强效果
Strengthening Performance of Chitosan-AM-DM Graft Copolymer
【摘要】 采用硫酸亚铁(FeSO4)+过氧化氢(H2O2)氧化还原体系引发制备壳聚糖(CS)和丙烯酰胺(AM)及甲基丙烯酸二甲基氨基乙酯(DM)三元接枝共聚物,讨论了反应条件对接枝共聚物在纸张上增强效果的影响。其最佳合成条件为:m(FeSO4)=0.05%,m(FeSO4):m(H2O2)=0.05:1.8,m(CS)=1%,m(AM)=5%,m(DM)=0.3%,反应体系pH值为4~6。当接枝共聚物用量为0.4%时,与同等条件下壳聚糖-AM接枝共聚物相比,可使纸张的抗张强度和耐破度分别提高15%和18.68%。
【Abstract】 The graft copolymer was synthesized through oxidation-reduction system including ferrous sulfate(FeSO 4) and hydrogen dioxide(H2O2),by using chitosan(CS) as a dispersant,dimethylaminoethyl methacrylate(DM) and acrylamide(AM) as monomers.e effects of reaction factors on strengthening property were studied.e optimum synthesis conditions are as follows:the dosage of FeSO 4 being 0.05%,m(FeSO4):m(H2O2) being 0.05:1.8,CS being 1%,AM being 5%,and DM dosage being 0.3%,pH of system being 4 ~ 6.When the dosage of graft copolymer being 0.4%,the tensile strength and bursting strength of paper could improve by 15% and 18.68% compared with the same condition as CS graft AM copolymer.
【Key words】 chitosan; acrylamide; dimethylaminoethyl methacrylate; graft; strengthening agent;
- 【文献出处】 纸和造纸 ,Paper and Paper Making , 编辑部邮箱 ,2011年08期
- 【分类号】TS727
- 【下载频次】124